Menu

Cheap flights from Seattle to Philadelphia Intl (SEA - PHL)

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

How to find the cheapest flight from
Seattle (SEA) to Philadelphia Intl (PHL)

What is the cheapest day to fly round-trip from Seattle to Philadelphia Intl?

Friday is generally a great day to depart. Flying on this day could help you save up to 17%.

How far in advance should I book a flight from Seattle to Philadelphia Intl?

Users have found that booking a flight from Seattle to Philadelphia Intl at least 21 days early can save you up to 13% on average compared to booking a flight this week. If booking 21 days before your flight isn’t an option for you, users have found flights from Seattle to Philadelphia Intl for as little as $213 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $252 for flights departing within the next 3 days.

What is the cheapest month to fly from Seattle to Philadelphia Intl?

The best pricing can be found in the month of February. Prices to Philadelphia Intl from Seattle average $214. You can even find prices in February for less than $214, as users have found deals to Philadelphia Intl from as low as $102. The month of December appears to be one of the more expensive times to travel to Philadelphia Intl from Seattle. Flying in the targeted month can save you up to 20%.

When is the cheapest time to fly from Seattle to Philadelphia Intl (03A - PHL)?

It’s typically best to fly out from Seattle to Philadelphia Intl in the afternoon. Doing so could potentially save you 44% on the flight price compared to flying in the evening, which is usually more expensive.

Cheap flights from Seattle to Philadelphia Intl in August, September 2020

The best prices found for SEA to PHL flights for August, September
30 Jul - 3 Aug
$76pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
27 Jul - 3 Aug
$87pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
26 Jul - 7 Aug
$95pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

Seattle to Philadelphia Intl 2020 flight deals

Cheap flights to Philadelphia Intl from Seattle found for this year
30 Jul - 3 Aug
$76pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
27 Jul - 3 Aug
$87pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
26 Jul - 7 Aug
$95pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

Non-stop flights to Philadelphia Intl from Seattle

Save time with Seattle to Philadelphia Intl direct flight deals
22 Sep - 25 Sep
$269pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
PHL
Philadelphia
PHL
Philadelphia
American Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
22 Nov - 1 Dec
$349pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
PHL
Philadelphia
PHL
Philadelphia
American Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
24 Nov - 2 Dec
$379pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
PHL
Philadelphia
PHL
Philadelphia
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Philadelphia Intl

Late deals on round-trip flights to Philadelphia Intl from Seattle, departing today and this week
27 Jul - 3 Aug
$87pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
26 Jul - 7 Aug
$95pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
28 Jul - 4 Aug
$102pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

One-way flights to Philadelphia Intl from Seattle

The cheapest one-way flights from Seattle to Philadelphia Intl
5:23 pm - 1:34 pm
Multiple Airlines
1 Stop
17h 11m
SEA - PHL
Multiple Airlines
$73
Kiwi.com
2:39 pm - 1:34 pm
Multiple Airlines
1 Stop
19h 55m
SEA - PHL
Multiple Airlines
$86
Kiwi.com
5:31 am - 1:34 pm
Multiple Airlines
1 Stop
29h 03m
SEA - PHL
Multiple Airlines
$90
Kiwi.com

Related info for your journey

Useful info, stats and facts about Seattle to Philadelphia Intl flights.

Flight FAQs

From Seattle to Philadelphia Intl

Are flight prices decreasing from Seattle to Philadelphia due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Seattle and Philadelphia for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from Seattle to Philadelphia Intl for under $100 on Cheapflights?

Yes, there are multiple flights from Seattle to Philadelphia Intl for under $100. The cheapest flight booked recently is on Spirit Airlines for just $76, but on average you can expect to pay $108.

Are there nonstop flights from Seattle to Philadelphia Intl for under $300 on Cheapflights?

Cheapflights has at least 9 direct flights from Seattle to Philadelphia Intl under $300. A good price for a nonstop flight from Seattle to Philadelphia Intl is less than $462.

Are there last-minute flights available from Seattle to Philadelphia Intl for under $100?

There are currently 20+ open flights from Seattle to Philadelphia Intl within the next 7 days for less than $100.

What days are nonstop flights available from Seattle to Philadelphia?

Days when nonstop flights are available for this flight are: Thursday, Friday, Saturday.

Is Seattle weather warmer or cooler than Philadelphia?

Our data indicates that the weather will be 88 °F on average in the month of July. The temperature in Philadelphia is typically hotter than in Seattle. If you're traveling when the temperature is at its warmest, push to plan early, as flight price and availability will have an impact on your travels. For the best results, search for flights well in advance or after peak season.

How long is the flight from Seattle to Philadelphia Intl?

A quick flight from Seattle to Philadelphia Intl can take about 15h 44m. Spirit Airlines provides one of the quickest options available for as low as $103.

What is the cheapest airline to fly from Seattle to Philadelphia Intl round-trip?

According to our current data, Spirit Airlines ($76), offers the cheapest pricing from Seattle to Philadelphia Intl.

What are the cheapest airlines to fly from Seattle to Philadelphia Intl one-way?

The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $35.

Alternative routes for Seattle to Philadelphia Intl

Destination information for Philadelphia Intl

Things to know before you go. Useful info for your trip from Seattle to Philadelphia Intl
Average temperature for August in Philadelphia Intl
86.0 °F
Avg rainfall for August in Philadelphia Intl
3.6 ″

Airports servicing Seattle

Seattle King County/Boeing (BFI)
Seattle Lake Union Spb (LKE)

Airports servicing Philadelphia

Hourly flight availability from Seattle to Philadelphia Intl

Evening 6 PM to midnight 53% of SEA to PHL departures
Morning 6 AM to noon 46% of SEA to PHL departures
Early morning Midnight to 6 AM 1% of SEA to PHL departures
Afternoon Noon to 6 PM 0% of SEA to PHL departures
Midnight
6 AM
Noon
6 PM